Frequencies for first 10,000 rows of ume_vag variable in natlterr2008 dataset :

Vaginal RFP |
730=f_u_vag |
          U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,471       34.71       34.71
          2 |      1,175       11.75       46.46
          9 |      1,415       14.15       60.61
          . |      3,939       39.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016